| 摘要 |
A medical injector apparatus is provided for carrying medications, for example epinephrine. The medical injector includes a safety guard, and a housing having a first casing portion and a second casing portion which are secured together to form a chamber therebetween. A pair of hinge portions provides pivoting motion of a safety guard. The pusher bar is not attached to the housing and is free to move within the chamber provided. A leaf spring is disposed between the stationary bar and the pusher bar to resiliently bias the pusher bar so as to be in a non-dispensing condition. The pusher bar is connected to a column which passes through an aperture in a stationary bar. The column is connected directly to a wedge-shaped member. A needle is secured to the wedge shaped member. The wedge-shaped member is shaped to conform to a wedge-shaped reservoir formed in a portion of the housing chamber, and the medication fluid is disposed in the reservoir located between the wedge-shaped member and the inclined sides housing chamber. The reservoir is sized to contain a precisely defined volume of medication fluid. The bottom portion of the housing also includes a resilient sleeve disposed in a bore formed in the bottom portion of the housing, for protecting a needle. The needle is secured into the wedge-shaped member. The needle passes through the resilient sleeve when the pusher bar is depressed.
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